Sorry Pine, but I'm not sure what you are asking for. Are you suggesting
that links be added to this page each time someone looks into retention?
That would probably be overkill. I take retention measurements on a weekly
basis and a lot of that work is measurement theoretic, so it answer more
questions about a measurement than the measured phenomena.
I think we'll want a more general practice -- since this page only relates
to retention, we'd probably want similar summary pages for other frames of